How to debug `native Objective C code` in react-native?

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I'm using react native in my ios project. I can see all the logs from react native side in chrome console, and some auto generated logs in xcode.

I recently ran into a problem while using Firebase dynamic links in my app. There is a native module LinkManager which basically handles all the dynamic links to the app and sends the parsed url or the deeplink to my app.

But this is not working and I understood that the problem is inside the native module that handles it.

But when I try to give NSLogs, no output appears in the xcode console, nor in the simulator console(cmd + /). I'm wondering how can I debug the native code inside xcode.

xcode9 react-native-ios react-native ios
2 Answers

You need to open your project in xCode and run it in any simulator. Then you can either add breakpoints on the desired line of code or use NSLogs to degug it or if it is crashing at a particular point, you can add a exception breakpoint in project.

user_47586450

If you want to see logs from native code in XCode debug together with your console.log from JS code, you can do it like this:

#import <React/RCTLog.h>

RCTLog(@"Hello world");
user_22804440
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